Rt Rev Christopher Chessun has invited the Mayor of London Sadiq Khan as well as faith leaders and young people to come together to create a city that works for everybody.
"The aim of the Assembly, and my strong hope, is to bring together people of good will to make a public statement of our commitment to neighbour and stranger, society and community, and to celebrate our diversity," he said.
Southwark Cathedral's Faith and Community Assembly will pay special attention to what young people want from their city, according to Bishop Christopher.
He said: "We can all listen to the voices of young people and sign a declaration that will pledge our determination as Londoners to ensure that this great city shall continue to be a place of welcome, generosity and equality with respect for all."
He told Premier: "The really important thing for me is that we will hear the voices of young people who've been very excited and very enthusiastic in wanting to support us.
"The young people will have an equal voice and that I think is great because that is also terribly important for building good community in London."
The clergyman told Premier religion is a great tool for building relationships: "Religion supports the efforts of others in community-building, and we have very good people in public life in London that think the same from different values and perspectives, these are about values that break down barriers."
Listen to Premier's Hannah Tooley speak to Rt Rev Christopher Chessun here: